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Visar resultat 1 - 5 av 9 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Analysis of the Stratospheric Aerosol Load After the 2019 Raikoke Eruption

    Kandidat-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Felicia Carlborg; [2021]
    Nyckelord :Volcanic Climate Impact; Raikoke; CALIPSO; Satellite; Stratospheric Aerosols; Radiative Forcing; Aerosol Optical Depth; Physics and Astronomy;

    Sammanfattning : The stratospheric aerosol load after the eruption of Raikoke in 2019 have been analysed with satellite data from the CALIPSO satellite. The goal was to see how much the stratospheric aerosol load increased due to the Brewer Dobson circulation, and further, how this affected the stratospheric aerosol optical depth (AOD), and the corresponding radiative forcing (RF). LÄS MER

  3. 2. Assessing the biodiversity crisis within the Triassic-Jurassic boundary interval using redox sensitive trace metals and stable carbon isotope geochemistry

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Halla Margrét Viðarsdóttir; [2020]
    Nyckelord :Stenlille; Schandelah; redox conditions; C-isotopes; marine sediments; trace elements; enrichment factors; mass extinction; Triassic – Jurassic boundary; Earth and Environmental Sciences;

    Sammanfattning : Around the Triassic-Jurassic-Boundary time interval, a severe mass extinction event occurred, which has been associated to volcanism of the Central Atlantic Magmatic Province (CAMP). Significant amounts of greenhouse gases as carbon dioxide (CO2) or methane (CH4) and other volatiles are suggested to have been released into the atmosphere, leading to global warming with subsequent impact on the biosphere. LÄS MER

  4. 3. Naturkatastrofer i Sverige

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Therese Eriksson; [2017]
    Nyckelord :Hazard; flooding; landslides; earthquakes; Faror; översvämning; skred; jordbävning;

    Sammanfattning : To be able to plan and construct a Swedish society that is well prepared for geological hazards, the government need to know about past event that has happened during the history, so they know how to plan for the future. Highly possible events that will happen are flooding, landslides, volcanic gases in the atmosphere and earthquakes. LÄS MER

  5. 4. Samband mellan vulkanutbrott och klimatförändringar : Analys och värdering av teorier om vulkanisk aska och gasers påverkan på det globala klimatet

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Eva Johansson; [2015]
    Nyckelord :sulfur dioxide; volcanic gases; climate forcing; stratosphere; volcanoes;

    Sammanfattning : This literature review analyses and discusses different theories and results regarding impact of volcanic eruptions on climate change in Earth's history. Present global warming has been attributed to anthropogenic emissions of greenhouse gases, mainly carbon dioxide, however changes in global temperatures have occurred before the onset of anthropogenic emissions. LÄS MER

  7. 5. Transportation and deposition of volcanic ash from Iceland to the Arctic

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Josefin Jönsson; [2014]
    Nyckelord :Grímsvötn 2011; volcanic eruption; the Arctic; transportation and deposition of volcanic ash; albedo; air traffic; Physics and Astronomy; Earth and Environmental Sciences;

    Sammanfattning : As the Arctic will become more available to shipping traffic in the future, given the current trend of diminishing ice sheets continues, the emission of particles and gases originating from ships will increase in the Arctic. The emission of particles and gases can affect the sensitive Arctic environment in many ways, e.g. LÄS MER